鸣叫

B.describe an alternative hypothesis and provide evidence and arguments that support it.

欢乐的海豹和那些喳喳的鸣叫、"与飞鸟有一点相似之处"的小飞鱼便是这一广阔天地的主人。

Based on phylogenetic analysis, this paper reviewed the relationship between hormones including sex hormones and AVT, and vocal production and perception through all anuran species studied to date. We found that in anuran brains the AVT system related to vocal behaviors were very conservative while the sex hormone systems involved in vocal communication might be originated independently from varied taxa of anuran.

本文通过对已做相关研究的所有物种进行系统发育分析，发现中枢神经与鸣叫行为相关的精氨酸加压素系统具有高度的进化保守性，而与鸣叫相关的性激素作用系统可能是多次独立起源的。

Anuran amphibian; androgen; arginine vasotocin; advertisement call; release call; phylogenetic development

中文关键字：无尾两栖类；雄激素；精氨酸加压素；广告鸣叫；释放鸣叫；系统发育

Although mockingbirds superbly mimic the song s and calls of many birds, they can nonetheless be quickly identified as mockingbirds by certain aural c lues.

尽管模仿鸟学很多种鸟的鸣叫声惟妙惟肖，但人类还是能够依其声尽管模仿鸟学很多种鸟的鸣叫声惟妙惟肖，尽管模仿鸟学很多种鸟的鸣叫声惟妙惟肖音上的线索很快识别它们。

The voice of raptor and beast decreased the feeding time of pika significantly; at the same time, the voice of raptor prolonged the alertness time of pika.

猛禽类和兽类的鸣叫声可显著减少高原鼠兔的采食时间，而猛禽类的鸣叫声则可延长鼠兔的警戒时间。

This paper analyzes the diversity and complexity of calls and songs of the white-rumped snow finch recorded from Heimahe, Maduo, Huashixia, and Tuotuohe of the Tibet Plateau using SAS-Lab avian song analysis software. The results revealed that the value of the call rate changes quickly from 0.522 to 0.127 and 0.119, which reveals that there are fewer notes in calls.

本文以 SAS-Lab鸟类声谱分析软件对采自青藏高原黑马河、玛多与花石峡、沱沱河的白腰雪雀不同地方种群的鸣叫与鸣唱的复杂性进行了分析，发现白腰雪雀的鸣叫相对变化率随着采样量的增加由0.522迅速降低到0.127和0.119，表明其鸣叫声组成中音节类型较少。

In order to explore the principle of sound of the cricket's different sounds,we regarded adult Gryllus bimachlatus as experiment materials,recorded and analyzed with the sounds acquisition software Cool-edit 2000,took photographs in random to record changes of position of cricket's wings,measure and analyze angles between the wing and the body when the cricket send out different sounds,and reseach the vocalism's structure of the cricket's different sound.

为探索蟋蟀不同鸣叫声的发声原理，以双斑蟋成虫为实验材料，用Cool-edit2000声音采集软件记录、分析，同时用数码照像机抓拍蟋蟀各种鸣叫瞬间的翅膀位置，分析测量不同鸣叫声时翅膀与身体所成的角度，对蟋蟀的三种不同鸣叫声的发声结构进行了研究。

Instead of the command center of the New GodPhoenix, he found himself seated on a couch in what appeared to be someone's living room, in front of a television that blared the results of a basketball game and the cheers of an approving crowd.

代替新的 GodPhoenix 的指令中心，他在似乎是某人的客厅东西在一个长椅上发现他自己被坐，在一台高声鸣叫了一场篮球比赛的结果，和高声鸣叫了满意的群众愉快的电视之前。

In its most complete form, one or more introductory whines are followed by chucks.

最完整的求偶鸣叫是现发出介绍性的鸣叫，在发出呱呱的叫声。

Proud frog pond owners can enjoy the melodious calls of frogs during the breeding season, seeing masses of wriggling hungry tadpoles in their pond and tiny newly emerged froglets taking their first hops to their new land-loving life. Building a frog pond and planting native vegetation is fun and provides a wonderful environment to enjoy native wildlife in your own backyard.

一个将自己的青蛙池塘维护得很好的主人，会很自豪的观察到从青蛙们开始鸣叫、交配，到它们所生的青蛙卵变成可爱得小蝌蚪，直到变态成幼蛙并发出第一声鸣叫走出池塘步入它们的陆地时代建造一个青蛙池塘并种植乡土植物是一件能给你不断带来惊喜的事情，让我们来一起感受能观察野生动物的小花园吧！

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。